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MERSEN FUSE MV3 630A/185mm 3P3 1.350.076 1.350.076

MERSEN FUSE MV3 630A/185mm 3P3 1.350.076 1.350.076

Engineered for high-capacity industrial power distribution, the MULTIVERT® Size 3 630A 1×3-pole fuse-switch disconnector guarantees reliable protection and safe disconnection in demanding environments. Designed for 185mm bus bar systems, it supports straightforward integration into existing panels and assemblies.

SKU: J1023255Alt SKU: 1.350.076MPN: J1023255
Price
List Price £1,408.79 ex VAT
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Why Choose the Mersen J1023255 MULTIVERT® Fuse Switch Disconnector?

The Mersen J1023255 is a high-performance NH fuse switch disconnector designed for reliable switching, isolation and overcurrent protection in low-voltage electrical distribution systems. Part of the Mersen MULTIVERT® 630A series, it is engineered for installation on 185 mm busbar systems in three-pole arrangements.

This Size 3 fuse switch disconnector combines a compact vertical format with an integrated current transformer for three-pole measurement. Its modular construction supports fast installation, straightforward maintenance and a high degree of protection for personnel working on industrial switchboards and power distribution equipment.

With a rated current of 630 A and a rated operating voltage of 690 V AC, the J1023255 is suitable for demanding industrial power applications. It accepts NH Size 3 fuse-links and features M12 screw connections, an 80 kA short-circuit current rating and a compact standard installation depth of 123 mm.

Key Advantages

  • Reliable switching, isolation and overcurrent protection.
  • 630 A current rating for high-power distribution applications.
  • 690 V AC rated operating voltage.
  • Designed for 185 mm busbar systems.
  • Integrated 600/5 A current transformer for three-pole measurement.
  • Compact vertical design helps conserve switchboard space.
  • Modular construction supports efficient installation and maintenance.

Key Features

  • Mersen MULTIVERT® 630A series.
  • 630 A rated current.
  • 690 V AC rated voltage.
  • NH Size 3 fuse-link compatibility.
  • One three-pole switching configuration.
  • 185 mm busbar mounting system.
  • M12 screw cable connections.
  • Integrated calibrated current transformer.
  • 80 kA short-circuit current rating.
  • RoHS-compliant construction.

Reliable Protection and Measurement for Power Distribution

NH fuse switch disconnectors such as the Mersen J1023255 combine circuit protection with a safe means of switching and isolating electrical loads. The device accommodates replaceable NH fuse-links, helping protect cables and downstream equipment against overloads and short circuits while simplifying maintenance.

The integrated 600/5 A current transformer provides calibrated three-pole current measurement without requiring a separate external transformer assembly. This makes the J1023255 particularly suitable for switchboards requiring dependable protection together with accurate load monitoring.

Typical Applications

  • Industrial low-voltage switchboards.
  • Main power distribution panels.
  • Motor control centres.
  • Manufacturing and process plants.
  • Commercial and infrastructure distribution systems.
  • OEM electrical control equipment.

Technical Specifications

Current 630 A
Phase Three Phase
Item number J1023255
Catalogue No 1.350.076
Description NH fuse-switch disconnector MULTIVERT® Size 3 630A 1x3-Pole switching Bus bar system 185mm Screw M12 ct3P
EAN/UPC Code 9008567008348
Frequency (Hz) 50 ... 60 Hz
Rated voltage AC IEC 690 V
Ampere Rating 630 A
Utilization Category AC 23 B @ Ue = AC 400 V; Ie = 630 A AC 22 B @ Ue = AC 500 V; Ie = 630 A AC 21 B @ Ue = AC 690 V; Ie = 630 A
Switchability 1x3-pole switching
RoHS Compliant Yes
AC or DC AC
Short Circuit Current Rating (SCCR) 80kA@Ue = AC 400 V; Ie = 630 A / 80kA@Ue = AC 500 V; Ie = 630 A / 80kA@Ue = AC 690 V; Ie = 500 A
Fuse Size 3
Design Details MULTIVERT® 1.350.000 with integrated C.T. 600/5A, 5,00 VA, class 0,5; calibrated, for triple pole measurement
Number of Poles 3-Pole
Degree of Pollution 3
Rated Impulse Withstand Voltage 12 kV
Rated Insulation Voltage 1000 V
Rated SC Withstand 12.6 kA / 1 s
Max Power dissipation of Fuse Links Pn 48 W
Max Power dissipation of Solid Links Pn 17.5 W
Power Dissipation by Ith without Fuse-Links 95 W
Rated short circuit making capacity with solid links Icm 16 kA
Installation Mounting Bus bar system 185 mm
Product Width 98 mm
Product Length 190 mm
Product Height 685 mm
Sell Pack Quantity 1 EA
Sell Pack Weight 5.8 kg
Sell Pack Width 100 mm
Sell Pack Length 688 mm
Sell Pack Height 195 mm
Product group IEC Fuse Switch Disconnectors
Conventional Free Air thermal Current With Fuse-Links Ith 630 A
Product Weight 5.8 kg
Conventional Free Air thermal Current - Solid Links 800 A
HS Code 85365080
Country of Manufacture Hungary
Poles 3-pole
Device Type Fuse switch disconnector
Voltage 690 V

Frequently Asked Questions

What is the Mersen J1023255 used for?

It is used for switching, isolation and overcurrent protection in industrial low-voltage power distribution systems, while its integrated current transformer enables three-pole current measurement.

What is the rated current of the J1023255?

The Mersen J1023255 has a rated current of 630 A.

Which fuse-links are compatible with this disconnector?

It is designed for NH Size 3 fuse-links manufactured in accordance with applicable IEC and EN standards.

Does the J1023255 include a current transformer?

Yes. It includes a calibrated 600/5 A, 5 VA, Class 0.5 current transformer for three-pole measurement.

How is the J1023255 installed?

It is mounted vertically on a 185 mm busbar system and uses M12 screw connections for secure electrical termination.

Trusted by Electrical Professionals Worldwide

Mersen MULTIVERT® fuse switch disconnectors are widely specified by panel builders and electrical engineers for dependable circuit protection, safe load isolation and efficient integration into industrial power distribution systems.

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